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[Ian Mallett <ian@xxxxxxxxxxxxxx>]

The second workaround does not work with apt-get; e.g.:

The following packages have unmet dependencies:
 libglu1-mesa-dev : Conflicts: libglu1-mesa-dev:i386 but 9.0.0-2 is to be installed
 libglu1-mesa-dev:i386 : Conflicts: libglu1-mesa-dev but 9.0.0-2 is to be installed
E: Unable to correct problems, you have held broken packages.

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https://bugs.launchpad.net/bugs/949606

Title:
  64 bit dev packages should include 32 bit .so library file

Status in mesa package in Ubuntu:
  Triaged

Bug description:
  64 bit dev packages contain a 64 bit version of the library file(s)
  that they provide for linking but not a 32 bit version of the library
  file(s). In previous versions of Ubuntu, however, it was possible to
  compile 32 bit applications using the 64 bit dev packages in by
  installing ia32-libs, which contained the required 32 bit library
  files.

  In the move to multiarch, 32 bit library files are being removed from
  ia32-libs. Multiarch (I assume) aims to keep the architectures
  separate, so the generally intended solution is to install the i386
  version of the dev package when compiling 32 bit applications, ie
  side-by-side with the 64 bit dev package.

  However, some 64 bit development packages conflict with their 32 bit
  equivalent. This creates a regressive situation where it is impossible
  to install them side-by-side - you are forced to either install the 32
  bit package, which breaks 64 bit compilations, or the 64 bit package,
  which breaks 32 bit compilations.

  An example is libglu1-mesa-dev, which conflicts with libglu1-mesa-
  dev:i386. The libglu1-mesa-dev file contains all the necessary
  development files for 32 bit *except* for the 32 bit library file. It
  does contain the 64 bit library file. Since the library file is part
  of the development files, libglu1-mesa-dev does not contain all the
  necessary development files for 32 bit, ie it does not contain all the
  necessary development files for multiarch. I think that it *should*
  contain all the necessary files for building multarch applications.

  The two workarounds are:

  1. Manually re-install the required i386 dev packages before compiling
  32 bit apps, and then manually re-install the required amd64 dev
  packages before compiling 64 bit apps. This is a real pain.

  2. Install the i386 binary package (eg libglu1-mesa:i386) and the
  amd64 dev package (eg libglu1-mesa-dev), and manually create symlinks
  for the i386 libXYZ.so package (eg sudo ln -s /usr/lib/i386-linux-
  gnu/libGL.so.1 /usr/lib/i386-linux-gnu/libGL.so). This is a more
  permanent solution but is a real pain to set up, as you have to find
  each missing library manually, and some library files, like
  mesa/libGL.so.1, are in subfolders.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: libglu1-mesa-dev 8.0.1-0ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 1.94.1-0ubuntu1
  Architecture: amd64
  CompizPlugins: [core,bailer,detection,composite,opengl,decor,grid,resize,compiztoolbox,vpswitch,place,gnomecompat,move,regex,animation,imgpng,snap,mousepoll,session,expo,workarounds,wall,ezoom,fade,scale,unityshell]
  CompositorRunning: compiz
  Date: Thu Mar  8 10:20:54 2012
  DistUpgraded: Log time: 2012-02-26 08:25:08.500725
  DistroCodename: precise
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox-guest, 4.1.8, 3.2.0-12-generic, x86_64: installed
   virtualbox-guest, 4.1.8, 3.2.0-14-generic, x86_64: installed
   virtualbox-guest, 4.1.8, 3.2.0-17-generic, x86_64: installed
   virtualbox-guest, 4.1.8, 3.2.0-18-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter [80ee:beef] (prog-if 00 [VGA controller])
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1)
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
  MachineType: innotek GmbH VirtualBox
  ProcEnviron:
   LANGUAGE=en_AU:en
   TERM=xterm
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=630a9f76-6f8f-43be-bb99-6be721c9deaf ro quiet splash vt.handoff=7
  Renderer: Software
  SourcePackage: mesa
  UpgradeStatus: Upgraded to precise on 2012-02-26 (11 days ago)
  dmi.bios.date: 12/01/2006
  dmi.bios.vendor: innotek GmbH
  dmi.bios.version: VirtualBox
  dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
  dmi.product.name: VirtualBox
  dmi.product.version: 1.2
  dmi.sys.vendor: innotek GmbH
  version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu5
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.30-1ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

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